Just do it! I never welded a single thing until I was 44. Now it is second nature. I bought a Sam's Club buzz box and got some scrap metal. It came with a video and I was on my way to burning shoes and wrapping fingers in cold cloths.
You mentioned fibre glass. There are countless kits out there to start with. You can get them at parts stores and Hel-mart. The first time, don't listen to anybody. Just do what the manufacturer instructions say. Just like cooking, follow the rec. the first time, and the second time you can venture a bit.
Don't get frustrated. It will work.